The classic series actors were asked about the 50th anniversary special while appearing on Channel Nine in Australia, but both McCoy and Baker cautioned fans not to expect them to appear alongside Smith and Tennant.

"There actually making it now as we're here [in Australia], so the likelihood is [we're not in it]," Baker joked.

McCoy added: "All the fanbases all over the world believe [we should be involved], but not the producers [of Doctor Who]."

Former Sixth Doctor actor Baker went on admit that he understands why the older Doctors were not invited back for the anniversary.

"I look nothing like what I looked like originally, so the viewers would be very confused," Baker explained.

"All of us want to do it, just for the fans - because that's what they want," McCoy explained. "But we've heard nothing - Tom Baker's heard nothing, Colin Baker, Peter Davison, Paul McGann... none of us have heard anything."